<template>
  <div class="app-container">
    <el-input v-model="filterText" placeholder="Filter keyword" style="margin-bottom:30px;" />

  <el-tree ref="tree2" :data="data2" :props="defaultProps" :filter-node-method="filterNode" class="filter-tree" default-expand-all= "/"/></div>
</template>

<script>
export default {
  data() {
    return {
      filterText: '',
      data2: [],
      defaultProps: {
        children: 'children',
        label: 'title'
      }
    }
  },
  watch: {
    filterText(val) {
      console.log(val)
      this.$refs.tree2.filter(val)
    }
  },
  methods: {
    filterNode(value, data) {
      console.log(value, data)
      if (!value) return true
      return data.title.indexOf(value) !== -1
    }
  }
}
</script>

